Answer:
c) Natural selection
Step-by-step explanation:
The driving factor behind the frequency of traits that change due to their attractiveness to members of the opposite sex is natural selection. Natural selection is the process by which certain traits become more or less common in a population over time based on their impact on an individual's ability to survive and reproduce. In the case of traits that are attractive to members of the opposite sex, individuals possessing these traits are more likely to be chosen as mates, increasing their reproductive success and the likelihood of these traits being passed on to future generations.